| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we should [vb infin] | 3499 |
|
| 2 | [vb pp] should [vb infin] | 112 |
|
| 3 | [vb pp] we [vb infin] | 46 |
|
| 4 | [vb pp] we should | 24 |
|
